Divisional Rankings

Divisional Data Info
Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Illinois, Climate Division 8. Southwest

Average Temperature Rankings, July 2015

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
July 2015
1-Month		78.5°F
(25.8°C)		77.9°F
(25.5°C)		0.6°F
(0.3°C)		87th Coolest
Coolest since:
2014
42nd Warmest
Warmest since:
2012
Jun–Jul 2015
2-Month		77.0°F
(25.0°C)		75.9°F
(24.4°C)		1.1°F
(0.6°C)		95th Coolest
Coolest since:
1904, 1927
34th Warmest
Warmest since:
1934
Ties: 1949, 1977, 1993, 2017
May–Jul 2015
3-Month		73.8°F
(23.2°C)		72.3°F
(22.4°C)		1.5°F
(0.8°C)		105th Coolest
Coolest since:
1924
24th Warmest
Warmest since:
1934
Ties: 1902, 1913, 1980
Apr–Jul 2015
4-Month		69.9°F
(21.1°C)		68.1°F
(20.1°C)		1.8°F
(1.0°C)		110th Coolest
Coolest since:
1907
19th Warmest
Warmest since:
2012
Ties: 1933, 2001, 2006
Mar–Jul 2015
5-Month		64.6°F
(18.1°C)		63.4°F
(17.4°C)		1.2°F
(0.7°C)		99th Coolest
Coolest since:
1960
30th Warmest
Warmest since:
2012
Ties: 1930, 1985, 2018, 2021
Feb–Jul 2015
6-Month		58.2°F
(14.6°C)		58.6°F
(14.8°C)		-0.4°F
(-0.2°C)		50th Coolest
Coolest since:
1947
79th Warmest
Warmest since:
2012
Ties: 1901, 1965, 1997
Jan–Jul 2015
7-Month		54.4°F
(12.4°C)		54.7°F
(12.6°C)		-0.3°F
(-0.2°C)		53rd Coolest
Coolest since:
1912
76th Warmest
Warmest since:
2012
Ties: 1945, 1950, 1972, 1989
Dec 2014–Jul 2015
8-Month		52.4°F
(11.3°C)		52.2°F
(11.2°C)		0.2°F
(0.1°C)		61st Coolest
Coolest since:
1978
67th Warmest
Warmest since:
2012
Ties: 1898, 1901, 1913, 1935, 1943, 1973, 1988, 2009
Nov 2014–Jul 2015
9-Month		50.8°F
(10.4°C)		51.3°F
(10.7°C)		-0.5°F
(-0.3°C)		42nd Coolest
Coolest since:
1904, 1912
86th Warmest
Warmest since:
2012
Ties: 1907, 1910, 1927, 1993
Oct 2014–Jul 2015
10-Month		51.6°F
(10.9°C)		52.0°F
(11.1°C)		-0.4°F
(-0.2°C)		48th Coolest
Coolest since:
1904, 1912
80th Warmest
Warmest since:
2012
Ties: 1900, 1956
Sep 2014–Jul 2015
11-Month		53.0°F
(11.7°C)		53.5°F
(11.9°C)		-0.5°F
(-0.2°C)		41st Coolest
Coolest since:
1904
87th Warmest
Warmest since:
2012
Ties: 1900, 2001
Aug 2014–Jul 2015
12-Month		55.0°F
(12.8°C)		55.4°F
(13.0°C)		-0.4°F
(-0.2°C)		41st Coolest
Coolest since:
1904
87th Warmest
Warmest since:
2012
Ties: 1910, 1967, 1971, 1973
Feb 2014–Jul 2015
18-Month		55.6°F
(13.1°C)		56.5°F
(13.6°C)		-0.9°F
(-0.5°C)		24th Coolest
Coolest since:
1918, 1979
104th Warmest
Warmest since:
2012
Ties: 1984, 1994
Aug 2013–Jul 2015
24-Month		54.4°F
(12.4°C)		55.4°F
(13.0°C)		-1.0°F
(-0.6°C)		15th Coolest
Coolest since:
1979
112th Warmest
Warmest since:
2017
Ties: 1951
Aug 2012–Jul 2015
36-Month		54.8°F
(12.7°C)		55.4°F
(13.0°C)		-0.6°F
(-0.3°C)		25th Coolest
Coolest since:
1979
101st Warmest
Warmest since:
2018
Ties: 1900, 1913
Aug 2011–Jul 2015
48-Month		56.0°F
(13.3°C)		55.3°F
(12.9°C)		0.7°F
(0.4°C)		91st Coolest
Coolest since:
1980
34th Warmest
Warmest since:
2019
Ties: 1936, 1937, 1939, 1941, 1988, 1989, 1991, 1993, 2004
Aug 2010–Jul 2015
60-Month		56.2°F
(13.4°C)		55.3°F
(12.9°C)		0.9°F
(0.5°C)		98th Coolest
Coolest since:
1906
26th Warmest
Warmest since:
2020
Ties: 1923, 1942, 2000, 2011

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